JPH0226134A - Radio terminal equipment for control channel test - Google Patents

Abstract

PURPOSE:To improve maintenance by providing a distributer in the antenna of a radio control channel receiver in a radio base station and monitoring whether a radio terminal equipment for test correctly sends a control signal instructed from the central control device of the radio base station or not. CONSTITUTION:A distributer 15 and a receiver 16 for monitor to receive an electric wave are provided on an antenna 5 of a control channel receiver 6. Thus, a sending signal from a control circuit 13 of a radio terminal equipment 9 for the test is demodulated through a transmitter 14 and antennas 8 and 5 in the receiver 16 together with the receiver 6 and the correctness of an instruction control signal from a central control unit 1 is confirmed in the circuit 13. Next, when the unit 1 tests a radio control channel, the unit 1 sends the specified control signal to the circuit 13. This signal is sent through the antenna 8 to the control channel. In each test, the unit 1 monitors a received result in the receiver 6 and a confirmed result in the circuit 13 of the terminal equipment 9 and the normality of the receiver 6 is decided by the combination of lights.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wireless terminal for testing a control channel, and particularly to a wireless terminal for testing a control channel for confirming the normality of a control channel receiver of a wireless base station. It's about machines.

[Conventional technology]

Conventionally, this type of test wireless terminal is installed within a wireless base station, as shown in FIG. 2, which is a system configuration diagram of the wireless base station in which the test wireless terminal is installed.

The central control device 1 of the wireless base station has a dedicated control channel transmitter 39 connected to the transmitting antenna 2, a traffic channel transmitter 4, a control channel receiver 69 connected to the receiving antenna 5, and a traffic channel receiver 7. It is connected to and controls a test wireless terminal 9 having an antenna 8.

As shown in FIG. 3, which is a configuration diagram showing an example of a conventional control channel test radio terminal, this test radio terminal 9 receives a radio channel signal received by a dedicated antenna 8 through directional coupling. The signal is demodulated by the receiver 11 whose tuning is controlled by the synthesizer 12 through the anti-duplexer 10t, which is a receiver, and is transmitted to the control circuit 13. On the other hand, a signal sent from the control circuit 13 is modulated by a transmitter 14 whose tuning is controlled by a synthesizer 12, and is transmitted from an antenna 8 via an antenna duplexer 10. The control circuit 13 of this test wireless terminal 9 is connected to the central control device 1 of the wireless base station via a control line, and is under the control of the central control device 1 as a whole.

When the central control device 1 of the radio base station tests the radio control channel receiver installed in the radio base station to receive signals from radio terminals in the direction of the radio base station, the central controller 1 of the radio base station The central controller 1 instructs the control circuit 13 of the test wireless terminal 9 to send a specific control signal. The control signal generated by this control circuit 13 is sent to the transmitter 14.
After being modulated by the antenna duplexer 10 and the antenna 8
is sent out on the control channel. If this control signal can be correctly received by the control channel receiver 6 shown in FIG. 2, the central control device 1 of the radio base station determines that the control channel receiver 6t is normal, and if it cannot be received correctly, the control channel receiver 6t is determined to be normal. Aircraft 6 is determined to be at fault.

[Problem to be solved by the invention]

The conventional test wireless terminal described above does not monitor the signal received by the antenna of the wireless control channel receiver, and the central control unit of the wireless base station does not monitor the signal received by the antenna of the wireless control channel receiver. If the wireless control channel receiver cannot receive the signal on the control channel, it is difficult to determine whether the test wireless terminal is malfunctioning and the radio waves are not being sent to the control channel, or the wireless control channel receiver is malfunctioning and the radio waves are not being received. There was a problem.

[Means to solve the problem]

The wireless terminal for control channel testing of the present invention performs a test on a wireless control channel receiver installed in a wireless base station to receive and receive signals from the wireless terminal in the direction of the wireless base station. A test is being conducted to confirm the normality of the wireless control channel receiver by transmitting a specific control signal from the wireless terminal for the wireless terminal and confirming that the wireless control channel receiver can correctly receive the control signal. A radio base station of a radio telephone system includes a receiver that is electromagnetically coupled to the antenna of the radio control channel receiver and intercepts radio waves in the direction of the radio base station from the test radio terminal.

[Effect]

In the present invention, a distributor is provided on the antenna of the radio control channel receiver, and it is monitored whether the test radio terminal is correctly transmitting the control signal instructed by the central control unit of the radio base station.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing an embodiment of a wireless terminal for testing a control channel according to the present invention.

In FIG. 1, the same reference numerals as in FIGS. 2 and 3 indicate corresponding parts, 15 is a distributor electromagnetically coupled to the antenna 5 of the radio control channel receiver 6 of the radio base station, and 16 is a distributor. This monitoring receiver is electromagnetically coupled to the antenna 5 of the radio control channel receiver 6 and intercepts radio waves from the test radio terminal 9 in the direction of the radio base station. As described above, the control channel test radio terminal of the present invention is electromagnetically coupled to the antenna 5 of the radio control channel receiver 6 of the radio base station, and is provided with a nine-way splitter 15t, so that the test radio terminal 9 is connected to the radio terminal 9. It is configured to guide radio waves in the direction of the base station to a monitoring receiver 16, and apply a signal demodulated by the monitoring receiver 16 to the control circuit 13.

The operation of the embodiment shown in FIG. 1 will now be explained.

First, a radio channel signal received by the antenna 8 is demodulated by the receiver 11 whose tuning is controlled by the synthesizer 12 via the antenna duplexer 1 (1), and is transmitted to the control circuit 13. The signal to be
It is modulated by a transmitter 14 whose tuning is controlled by a synthesizer 12, and is transmitted from an antenna 8 via an antenna duplexer 10. This signal is received by a control channel receiving antenna 5 of a wireless base station, and then transmitted to a control channel receiver 6. At the same time, it is output from the distributor 15, and the synthesizer 1
2, the control signal is demodulated by the monitoring receiver 16 which is controlled to tune to the transmission frequency of the test wireless terminal 9, and the control signal instructed to be transmitted by the central control device 1 of the wireless base station is correctly transmitted to the antenna 5 by the control circuit 13. It has been confirmed that it has been received.

Next, when the central controller 1 of the wireless base station tests the wireless control channel in the direction from the wireless terminal to the wireless base station, the central controller 1 sends a specific signal to the control circuit 13 of the wireless terminal 9 for testing. Instructs to send a control signal. The control signal generated by the control circuit 13 is modulated by the transmitter 14 and then sent out onto the control channel via the antenna duplexer 10 and the antenna 8. Then, the central control device 1 of the wireless base station monitors the reception results at the control channel receiver 6 and the confirmation results at the control circuit 13 of the test wireless terminal 9 every time a test is performed, and uses the combination of the results to determine whether the control channel The normality of the receiver 6 is determined.

The criteria for this judgment are as shown in Table F: ■ If the reception result at the control channel receiver 6 and the confirmation result from the control circuit 13 of the test wireless terminal 9 are both normal, the control channel receiver 6 and the test If both of the test wireless terminals 9 are normal, ■ If the control channel receiver 6 fails to receive reception and the confirmation result in the control circuit 13 of the test wireless terminal 9 is normal, the control channel receiver 6 is faulty. ■ The control channel The reception result at the receiver 6 is normal and the test wireless terminal 9
If the transmission of the control signal cannot be confirmed by the control circuit 13,
Partial failure of the distributor 15 of the control channel receiving antenna 5, ■ If the control channel receiver 6 fails to receive and the control circuit 13 of the test wireless terminal 9 fails to confirm the transmission, the test wireless terminal 9's Determined as a failure.

〔Effect of the invention〕

As explained above, the present invention provides a distributor in the antenna of a radio control channel receiver, and monitors whether the test radio terminal is correctly transmitting the control signal instructed by the central control unit of the radio base station. By doing so, when the control channel receiver cannot properly receive this signal, the central control unit of the radio base station can distinguish between a fault in the test radio terminal or a fault in the control channel receiver, and maintenance It has the effect of improving sex.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of a wireless terminal for control channel testing according to the present invention, FIG. 2 is a system configuration diagram of a wireless base station in which the wireless terminal for testing is installed, and FIG. 3 is a conventional FIG. 2 is a configuration diagram showing an example of a control channel test wireless terminal of FIG. DESCRIPTION OF SYMBOLS 111...Central control device of a radio base station, 6...Conflict control channel receiver, 9...Test radio terminal, 1
5...Distributor, 16...φφ monitoring receiver.

Claims (1)

[Claims] Sending a specific control signal from the test wireless terminal through a wireless control channel to a wireless control channel receiver installed in the wireless base station to receive signals in the direction of the wireless base station from the wireless terminal; In a radio base station of a radio telephone system that is conducting a test to confirm the normality of the radio control channel receiver by confirming that the radio control channel receiver can correctly receive the control signal, an antenna of the radio control channel receiver is provided. A wireless terminal for testing a control channel, comprising a receiver electromagnetically coupled to a receiver for intercepting radio waves in the direction of the wireless base station from the wireless terminal for testing.